I had a lot of fun playing your game. The art style is very cool and matches with your sound effects. Did you record the sounds yourself? The game reminded me of "Getting over it".
Unfortunately I had to restart the game twice because the pencil got longer than it should be.
In summary, you had a good idea and implemented it well.
I´ve submitted a local multiplayer game: https://itch.io/jam/brackeys-4/rate/722755. I would be happy to get your feedback on it. :-D
Viewing post in Cassette Tape jam comments
I´ve just tried to replicate that bug and it seems like that it happens when the penicel hits something completely parralel to it:
Picturs: https://we.tl/t-sT9IOqbhfd
( I am using WeTransfer since pictures are not allowed in posts. The link only works 7 days.)
So far i have not managed to replicate this bug on another collider.
I hope it helps.